86.1100.  Creditable service, board to fix and determine by rule. — 1.  The retirement board shall fix and determine by proper rules and regulations how much service in any year is equivalent to one year of service.  In no case shall more than one year of service be creditable for all service rendered in one calendar year.  The retirement board shall not allow credit as service for any period during which the member was absent without compensation, except as provided in sections 86.1110 and 86.1140.

  2.  Except as provided in subsection 3 of section 86.1110 or subsection 2 of section 86.1140, creditable service at retirement on which the retirement allowance of a member is based consists of the membership service rendered by such member since such member last became a member provided that no creditable service shall be allowed for any period of time when a member was not making contributions.

  3.  Creditable service also includes any prior service credit to which a member may be entitled by virtue of an authorized purchase of such credit or as otherwise provided in sections 86.900 to 86.1280.

  4.  Creditable service shall not include any time a member was suspended from service without compensation.  No contribution is required from either the member under section 86.1010 or from the city under section 86.1000 for such time.

  5.  Any member in active service with the police department on or after August 28, 2013, may accrue up to a maximum of thirty-two years of creditable service.  Contributions shall not be required of, and no service shall be credited to, any member for more than thirty-two years of service.